Table 3.
Autism Spectrum Disorder Subgroup Characterization
| ASD1 (n = 25) | ASD2 (n = 25) | Statistical Comparison | |||||
|---|---|---|---|---|---|---|---|
| Mean | (SD) | Range | Mean | (SD) | Range | ||
| Gender | 3 female participants | 5 female participants | χ2(1) = 0.60, p = 0.440 | ||||
| Handedness | 4 left | 5 left | χ2(1) = 0.14, p = 0.713 | ||||
| Age (years) | 13.7 | (2.5) | 9.2–18.0 | 13.3 | (2.9) | 7.4–17.8 | t(48) = 0.56, p = 0.580 |
| WASI-II | |||||||
| Verbal IQ | 101.5 | (21.2) | 59–147 | 99.6 | (13.5) | 70–128 | t(48) = 0.39, p = 0.698 |
| Non-verbal IQ | 100.9 | (18.4) | 53–134 | 109.7 | (17.2) | 70–140 | t(48) = −1.75, p = 0.086 |
| Full-Scale IQ | 101.6 | (19.0) | 61–141 | 105.0 | (14.8) | 79–139 | t(48) = −0.71, p = 0.483 |
| RMSD | 0.06 | (0.03) | 0.02–0.13 | 0.07 | (0.03) | 0.02–0.12 | t(48) = −0.44, p = 0.661 |
| ADOSa | |||||||
| Social interaction | 7.3 | (2.2) | 4–12 | 8.2 | (2.9) | 4–14 | t(47) = −1.21, p = 0.233 |
| Communication | 3.6 | (1.7) | 0–6 | 4.4 | (1.6) | 2–8 | t(47) = −1.55, p = 0.128 |
| Rep./Restricted | 2.2 | (1.5) | 0–5 | 2.3 | (1.6) | 0–5 | t(47) = −0.40, p = 0.692 |
| ADI-Rb | |||||||
| Social interaction | 18.4 | (5.0) | 6–28 | 18.0 | (4.3) | 12–26 | t(47) = 0.33, p = 0.743 |
| Communication | 13.0 | (5.5) | 2–24 | 13.3 | (4.5) | 6–22 | t(47) = −0.17, p = 0.862 |
| Rep. behaviors | 6.0 | (2.2) | 3–12 | 5.5 | (2.2) | 1–9 | t(47) = 0.86, p = 0.392 |
| Psychotropic med. use | 13 reported | 13 reported | χ2(1) = 0.00, p = 1.000 | ||||
| Comorbidities | 11 reported | 9 reported | χ2(1) = 0.33, p = 0.564 | ||||
| SRS | |||||||
| Awareness | 74.0 | (13.2) | 46–95 | 69.4 | (14.9) | 39–97 | t(48) = 1.16, p = 0.254 |
| Cognition | 77.7 | (11.1) | 50–96 | 74.0 | (12.4) | 45–99 | t(48) = 1.12, p = 0.268 |
| Communication | 83.2 | (10.0) | 66–105 | 78.4 | (12.2) | 62–110 | t(48) = 1.52, p = 0.135 |
| Motivation | 75.2 | (12.0) | 56–97 | 76.1 | (11.9) | 58–104 | t(48) = −0.26, p = 0.796 |
| ASD mannerisms | 91.4 | (16.1) | 60–126 | 81.4 | (14.0) | 58–112 | t(48) = 2.34, p = 0.023 |
Note: ADI-R = Autism Diagnostic Interview-Revised; ADOS = Autism Diagnostic Observation Schedule; IQ = intelligence quotient; Rep. = repetitive; RMSD = root mean squared displacement; SD = standard deviation; SRS = Social Responsiveness Scale; WASI-II = Wechsler Abbreviated Scale of Intelligence, 2nd edition.
a
Subdomain data not available for 1 ASD2 participant.
b
Subdomain data not available for 1 ASD2 participant.